Categories

560 skills are spread across 24 categories. Distribution is sharply long-tail.

Top 20 categories by size

Category	Count	Distribution
Research & Academic	88	`████████████████████████████`
Frontend & Design	74	`████████████████████████░░░░`
Agent & Orchestration	71	`███████████████████████░░░░░`
AI & Machine Learning	44	`██████████████░░░░░░░░░░░░░░`
Cognitive Science & Decision Making	36	`███████████░░░░░░░░░░░░░░░░░`
DevOps & Site Reliability	36	`███████████░░░░░░░░░░░░░░░░░`
Backend & Infrastructure	30	`██████████░░░░░░░░░░░░░░░░░░`
Productivity & Meta	28	`█████████░░░░░░░░░░░░░░░░░░░`
Code Quality & Testing	27	`█████████░░░░░░░░░░░░░░░░░░░`
Mobile Development	16	`█████░░░░░░░░░░░░░░░░░░░░░░░`
Data & Analytics	15	`█████░░░░░░░░░░░░░░░░░░░░░░░`
Content & Writing	14	`████░░░░░░░░░░░░░░░░░░░░░░░░`
Recovery & Wellness	14	`████░░░░░░░░░░░░░░░░░░░░░░░░`
Lifestyle & Personal	13	`████░░░░░░░░░░░░░░░░░░░░░░░░`
Career & Interview	10	`███░░░░░░░░░░░░░░░░░░░░░░░░░`
Legal & Compliance	7	`██░░░░░░░░░░░░░░░░░░░░░░░░░░`
Video & Audio	7	`██░░░░░░░░░░░░░░░░░░░░░░░░░░`
Business & Monetization	7	`██░░░░░░░░░░░░░░░░░░░░░░░░░░`
Education & Communication	6	`██░░░░░░░░░░░░░░░░░░░░░░░░░░`
Security & Trust	5	`██░░░░░░░░░░░░░░░░░░░░░░░░░░`

Giant categories (>30 skills)

These are large enough that they probably want sub-categories.

Count	Category
88	Research & Academic
74	Frontend & Design
71	Agent & Orchestration
44	AI & Machine Learning
36	Cognitive Science & Decision Making
36	DevOps & Site Reliability

Sparse categories (<3 skills) — 2 of 24

Single-skill categories are mostly accidents (someone typed a slightly different name). These are the prime candidates for merging into existing categories.

Count	Category	Members
2	Security & Operations	comfyui-incident-response, gpu-hosted-asset-hardening
1	Security & Compliance	supply-chain-defense-for-ml-extensions

Inter-category overlap (centroid cosine, top 15)

When two whole categories look semantically alike, that's a merge signal — not miscategorization of one skill.

graph LR
  n_Agent___Orchestration["Agent & Orchestration"] ---|"0.85"| n_Research___Academic["Research & Academic"]
  n_AI___Machine_Learning["AI & Machine Learning"] ---|"0.82"| n_Research___Academic["Research & Academic"]
  n_Backend___Infrastructure["Backend & Infrastructure"] ---|"0.82"| n_DevOps___Site_Reliability["DevOps & Site Reliabili…"]
  n_Productivity___Meta["Productivity & Meta"] ---|"0.80"| n_Content___Writing["Content & Writing"]
  n_Productivity___Meta["Productivity & Meta"] ---|"0.80"| n_Business___Monetization["Business & Monetization"]
  n_Career___Interview["Career & Interview"] ---|"0.80"| n_Productivity___Meta["Productivity & Meta"]
  n_Code_Quality___Testing["Code Quality & Testing"] ---|"0.79"| n_DevOps___Site_Reliability["DevOps & Site Reliabili…"]
  n_Agent___Orchestration["Agent & Orchestration"] ---|"0.79"| n_Productivity___Meta["Productivity & Meta"]
  n_AI___Machine_Learning["AI & Machine Learning"] ---|"0.79"| n_Agent___Orchestration["Agent & Orchestration"]
  n_Content___Writing["Content & Writing"] ---|"0.79"| n_Business___Monetization["Business & Monetization"]
  n_Research___Academic["Research & Academic"] ---|"0.78"| n_Productivity___Meta["Productivity & Meta"]
  n_Cognitive_Science___Decision_Making["Cognitive Science & Dec…"] ---|"0.76"| n_Productivity___Meta["Productivity & Meta"]
  n_Cognitive_Science___Decision_Making["Cognitive Science & Dec…"] ---|"0.76"| n_Career___Interview["Career & Interview"]
  n_Content___Writing["Content & Writing"] ---|"0.76"| n_Marketing___Launch["Marketing & Launch"]
  n_Career___Interview["Career & Interview"] ---|"0.76"| n_Content___Writing["Content & Writing"]

Category coherence (avg internal pairwise cosine, size ≥ 4)

A low coherence means the category is a grab bag — its members don't cluster together. A high coherence means it's tight and self-similar.

Loosest (most heterogeneous) — possibly over-broad

Coherence	Size	Category	Loosest pair
0.237	13	Lifestyle & Personal	panic-room-finder ↔ personal-finance-coach (0.01)
0.272	44	AI & Machine Learning	chatbot-analytics ↔ nano-banana-image-gen (-0.06)
0.283	27	Code Quality & Testing	secret-management-expert ↔ webapp-testing (-0.08)
0.288	28	Productivity & Meta	bad-faith-rhetoric-detector ↔ plugin-creator (-0.14)
0.300	16	Mobile Development	android-background-task-specialist ↔ jetpack-compose-navigation-expert (0.03)
0.308	14	Content & Writing	product-appeal-analyzer ↔ video-processing-editing (0.01)
0.320	74	Frontend & Design	form-validation-architect ↔ pixel-art-scaler (-0.04)
0.336	30	Backend & Infrastructure	completion-script-generator ↔ multi-tenant-architecture-expert (-0.04)
0.358	36	DevOps & Site Reliability	deploy ↔ virtualization-specialist (-0.06)
0.377	71	Agent & Orchestration	dag-skill-registry ↔ swift-executor (-0.01)

Tightest — possibly redundant or merge-candidate with neighbors

Coherence	Size	Category	Loosest pair
0.555	5	Security & Trust	cryptoeconomic-protocol-security ↔ oauth-oidc-implementer (0.30)
0.498	36	Cognitive Science & Decision Making	intercultural-discourse ↔ polya-problem-solving (0.15)
0.460	7	Legal & Compliance	national-expungement-expert ↔ recovery-app-legal-terms (0.20)
0.452	7	Video & Audio	ai-video-production-master ↔ win31-audio-design (0.16)
0.446	6	Education & Communication	ai-introduction-educator ↔ socratic-questioning (0.19)
0.439	10	Career & Interview	anthropic-technical-deep-dive ↔ cv-creator (0.09)
0.412	5	Marketing & Launch	port-daddy-marketing-copy ↔ seo-content-blogging (0.28)
0.407	7	Business & Monetization	next-move-customer-persona ↔ webapp-paywall-implementation (0.12)
0.390	4	Desktop & Native	desktop-window-layout-architect ↔ rust-app-distribution (0.17)
0.384	15	Data & Analytics	hr-network-analyst ↔ vector-database-migration-tool (0.06)